Abstract:
Laser communication offers high transmission rates and superior anti-interference performance, making it the development direction of future space communication. However, the narrow divergence angle of the laser beam places strict requirements on the micro-vibration environment of the satellite platform. The anti- microvibration design strategies of three representative international laser communication satellites, namely, Artemis, OICETS, and EDRS-C, were reviewed in this paper. Using vibration spectrum test data, four platform microvibration spectrum lines were obtained, including the NASDA spectrum, the ESA spectrum, the JBM-EF ICD spectrum, and the LCDE spectrum. Considering the characteristics of laser communication satellites, the technical route of anti-microvibration design was summarized, which includes component-level disturbance dynamic tests, finite element model correction, system-level microvibration tests, and integrated simulation of satellite attitude, vibration, and laser terminal. Finally, key suggestions were proposed to enhance the adaptability of laser communication payloads developed in China to the satellite platform micro-vibration environment.